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EZRA r. MARBLE, or SUTTON, MASSACHUSETTS.

Lezers-Patent No. 76,090, and Mms 31,1868

IMPROVEMENTS IN SHUTTLES'.

dit rlgehul referrer in im these etters ttutt mit mating gratui iin arme.

'.l-O ALL WHOM IT MAY CONCERN':

Be it linown 'that I, EZBA P. MAnBLE, 4of Sutton, in the county of Worcester, and State of Massachusetts, have invented a new and useful Improvement in Shuttles; and I do hereby declare that 'the following-is a full7 clear, and exact'description thereof, which will enable those sliilled in the art to malte and use the same, reference being had to the accompanying drawings, forming part of this spccieation.

This invention relates to a/iew and improved application of a-spring to the spindle of a shuttle, as hereinafter fully shown and described,jwhereby the spring is fully concealed and entirely out of tho way, so that when the shuttle islin use4 the spring cannot catch and cnt or break the threads, either ofthe warp or iilling. In the accompanying sheet oiI drawings- Figure I is a plan ortopview of a shuttle'provided with niy improvement.A

Figure?. a side sectional view of the same.

Similar lettersofreference indicate corresponding parts.

A' represents a. shuttle constructed in. the usual manner, and B is the4 spindle, the inneror pivoted end et" which -is provided or formed with a head, C, two sides, a a, of which are at right anglessvith each other, and

the other side composed of'threep'lane surfaces b, c, Z,-the surfaces b c being iu two diil'erent planes, which are parallel with each'otherfbut suficiently far apart to leave a shoulder, e, (see iigv 2,)1while the other surface, d,

forms an obtuse angle with c. 'This head C is iittcd in a r-ecess,f, in the shuttle, the m'aflin portion of which is of rectangular shap'e, the lower part being'bevelled,-to form a bearing for the' surface d of the head, when the V spindle is fitted down inthe shuttle, as shown in iig. 2.' D represents a spring, 4which is formed of a steelplate bent.in serpentine form, as shown in iig'. 2, and iittcd in a recess, g, in the shuttle, at an angle of about forty or forty-five degrees, the'upper end'of the spring bearing against the lsurface b of the head,'and the shoulder e at the lower endl of b. 'This spring works or exerts a 'force or pressurein theldlrection Aof its length, s'imilarto a spiral spring, but it is far more efficient, and not so liable to lose its elasticity as a coiled wire, and a more powerful spring may be obtained in a given length.

When the spindle is raised the spring is compressed, the surface c of the heed'sitting on the bottomof the main part ot' the recess f; but whenethe spindle is shoved or pressed a triile downward, the spring will force the spindle entirely down to a. horizontal position, parallel with the axis of-the shuttle, so that the surface :Z of the head will bear against the lower bevelled'part of the recessf, (see fig; The pin 7L, which securesthe spindle in the shuttle, passes through the head C, nea-r its4 upper part, as shown in iig. 2. By this arrangement the spring l), it will be seen, is lentirely out of the way, and cannot, as in the old plan, catch the threads whilethe shuttleisin use. rlhe recesscsfgin the shnttlmto receive the head of the. spindle arid the spring D,are quite small, and do not weaken the shuttle, as but a small portion of it iscut away.

I clailp as new, and desire to secure by Lettersllatent'- The spindle B and head C, provided with the inclines, as shown, in combination with the volute springl), arranged and operating as and for the purposeset forth,

EZRA I. MARBLE.

Witnesses:

E. J. MILLS, WILnnn Honnnoon. 

